Why do all VC's need to be leaders?

I think some do, but remembering this 3min talk by Derek Sivers http://www.ted.com/talks/derek_sivers_how_to_start_a_movemen... about leaders and followers, we need more followers than leaders. Once a lead investor is established, bring on the followers, startups need traction with investors too of which not everyone can be there first.

The question becomes which investors are known leaders and which ones are followers.